1. Last updated: 6/6/2016www.alto-shaam.com Halo Heat Training Cook & Hold OvensHolding Cabinets

2. Last updated: 6/6/2016www.alto-shaam.com Alto-Shaam Halo Heat System What is Halo Heat Low-Density Thermal Cable Radiant Heat Principles

3. Last updated: 6/6/2016www.alto-shaam.com Advantages of Halo Heat Optimum enzyme action to naturally tenderize meats Tender more juicier product Less shrinkage = Improved yield Ability to hold for extended periods of time Efficiency Operating Cost

4. Last updated: 6/6/2016www.alto-shaam.com Heat Cable Types High Temp Cable Cloth Cover, Teflon Sheath 850°F Max Temp 0.66 ohms/ft Low Temp Cable Stainless Cover, Teflon Sheath 550°F Max Temp 0.52 ohms/ft

5. Heat Cable Last updated: 6/6/2016www.alto-shaam.com High Temp Cable Wrap

6. Heat Cable Last updated: 6/6/2016www.alto-shaam.com Low Temp Cable Wrap

7. Last updated: 6/6/2016www.alto-shaam.com Cable Types Low Temp Cable 25-28 ohms per wrap in 125V units 50-54 ohms per wrap in 208/240V units 4-4.5 amps per wrap High Temp Cable 20-24 ohms per wrap in 125V units 40-45 ohms per wrap in 208/240V units 4-5 amps per wrap

8. Last updated: 6/6/2016www.alto-shaam.com Control Types Mechanical Electronic Digital Thermostat Electronic Elan Control Electronic Micro-Processor

9. Last updated: 6/6/2016www.alto-shaam.com Mechanical Controls Cook and Hold Ovens 1000-TH-I – Single Unit, Dual Cavity 500, 750, 1000-TH-II – Single Unit, Table Top, Stackable Holding Cabinets 500-1/2/3D – Drawer Warmer 500, 750, 1000-S – Single Cavity, Table Top, Stackable 1000, 1200-UP – Single Unit, Dual Cavity, 1000-BQ2 – 96/128/192 – Mobil Banquet Cart

10. Last updated: 6/6/2016www.alto-shaam.com Holding Cabinet Manual Control - Components Thermostat - 200°F Max Temp Pilot Light - Lit whenever thermostat is calling for heat Temperature Gauge - Gas filled/ Slow reacting Heat Cable – 2 or 4 Wraps (not shown)

11. Last updated: 6/6/2016www.alto-shaam.com Holding Cabinet Manual Control - Unit Operation Thermostat closes on call for heat Pilot light illuminates and cable energized Thermostat opens when satisfied Pilot light goes out and cable de-energized

12. Last updated: 6/6/2016www.alto-shaam.com

13. Last updated: 6/6/2016www.alto-shaam.com Holding Cabinet Service - troubleshooting the thermostat Slow make and break, No “click” Perform continuity check Perform calibration  50°F off or higher = automatic stat replacement

14. Last updated: 6/6/2016www.alto-shaam.com Holding Cabinet Service - Thermostat Calibration* Set thermostat at 140°F Thermocouple installed in center of empty cavity Unit must cycle a minimum of 3 times Record high temperature after unit has cycled off Record low temperature before unit calls for heat Average the two temps Calibration correct at +/- 5°F of 140° F set point * Must use a digital thermometer

15. Last updated: 6/6/2016www.alto-shaam.com Thermostat Adjustments Remove knob to access calibration screw CCW turn of screw will increase cavity temperature Approximately 1/8 of a turn = 5-7°F When complete screw MUST be sealed w/ Nail Polish

16. Last updated: 6/6/2016www.alto-shaam.com Service - Cable Access/Diagnostic Remove the top Remove the Side Panels Remove any jumpers to isolate each cable wrap  Low-Temp 25-28 ohms per wrap in 125V units 50-54 ohms per wrap in 208/240V units  High-Temp 20-24 ohms per wrap in 125V units 40-45 ohms per wrap in 208/240V units Ohm out each element Check each side of each element to ground

17. Last updated: 6/6/2016www.alto-shaam.com Element Test Points 1.Outside to Outside 2. Center to Center 3. Inside to Inside 4. Each Wire to Ground

18. Last updated: 6/6/2016www.alto-shaam.com Cable Replacement Remove side panels Lay unit on its back and remove the bottom Cut banding around insulation Remove elements one section at a time. Trace pattern if possible Install new cable taking care not to cross wires and not to over tighten on hangers Perform continuity check when complete to verify proper installation Replace insulation using a section of old cable in place of metal banding Set thermostat to Max Temp and let cycle for 2 hours to burn off oils

19. Last updated: 6/6/2016www.alto-shaam.com Door Adjustment Limited to adjusting handle and/or hinges Gasket is 1 piece preformed easily removed for cleaning/ replacement

20. Last updated: 6/6/2016www.alto-shaam.com Cook & Hold Manual Control - Components Hold Thermostat Cook Thermostat Cook Timer Contactor Pilot lights Temperature Gauge Voltage Switch – 208/240V Only Heat Cable – 3 Wraps (Except 500-TH-II)

21. Last updated: 6/6/2016www.alto-shaam.com Cook & Hold Manual Control - Operation Hold Operation Cook Timer Off Hold stat closes on call for heat Power sent to Hold Light and Hold Element (1 element only) Hold stat opens when set point is reached Hold light and Hold element de-energized

22. Last updated: 6/6/2016www.alto-shaam.com

23. Last updated: 6/6/2016www.alto-shaam.com Cook & Hold Manual Control - Operation Cook Operation Cook Timer On = Contactor Coil Energized Cook Thermostat closes on a call for heat - Power sent to line side of contactor Through contactor, power distributed to cook/hold light and elements (2 or 3) (Voltage Switch) Cook Stat opens when satisfied - power to contactor, cook/hold light and elements interrupted Cook Timer expires = Contactor Coil De-energized Unit drops into HOLD cycle

24. Last updated: 6/6/2016www.alto-shaam.com

25. Last updated: 6/6/2016www.alto-shaam.com Cook & Hold Manual Control - Service - Thermostat Calibration Hold Thermostat Cook Timer and Cook Thermostat Off Hold calibrated at 140°F – Minimum of 3 cycles Avg. High and Low of thermostat swing Calibration correct at +/- 5°F of 140F set point Cook Thermostat Cook timer turned on Cook thermostat set at 250°F – Minimum of 3 cycles Avg. high and Low of thermostat swing Calibration correct at +/- 10°F of 250F set point

26. Last updated: 6/6/2016www.alto-shaam.com Electronic Digital Thermostat Hold Only Used Mostly on BQ and MW units Components Digital Thermostat/Control Solid State PT-100 Cavity Air Sensor Solid State Relay 24 VAC Transformer

27. Last updated: 6/6/2016www.alto-shaam.com Electronic Digital Thermostat Displays Current Cavity Temperature Press SET to access cavity set point To change set point:  Press/Hold SET until LED Flashes  Adjust Set Point up/down  Press/Hold SET to Store Change

28. Last updated: 6/6/2016www.alto-shaam.com Electronic Digital Thermostat Unit Operation 24V supplied to thermostat from transformer L-1 supplied to contacts on thermostat Contacts close on a call for heat (LED indicator on control) energizing a solid state relay Relay energizes element wraps Cavity air sensor reaches set point, LED indicator goes out and contacts open to de-energizing relay

29. Last updated: 6/6/2016www.alto-shaam.com

30. Last updated: 6/6/2016www.alto-shaam.com Electronic ELAN Control Current Production on BQ’s Microprocessor Control Manually operated by a knob

31. Last updated: 6/6/2016www.alto-shaam.com Electronic ELAN Control Components Power Switch Control RTD Sensor Heat Cable

32. Last updated: 6/6/2016www.alto-shaam.com Electronic ELAN Control Operation Default Displays Actual Cavity Temp Press “Temp Display” then rotate knob to Set Temp To toggle between set and actual Press “Temp Display” To change display from “ACT to SET”  Press/Hold “Temp Display” for 5 seconds  “S” will flash and then “SET” will display Or  “A” will flash and then “ACT” will display To Change from F to C  Switch on, control off, Press/Hold “Temp Display for 3 seconds to display alternate temperature scale

33. Last updated: 6/6/2016www.alto-shaam.com Electronic ELAN Control Unit Operation Power supplied from switch to control and relay contacts on control Contacts lose on a call for heat Cable energized Contacts open when temperature is satisfied Power to elements interrupted

34. Last updated: 6/6/2016www.alto-shaam.com

35. Last updated: 6/6/2016www.alto-shaam.com Electronic ELAN Control Calibration Procedure Set temp to 140°F Let Temperature Stabilize (30-45 minutes) Press/Hold Hidden "CAL” button for 8 seconds to display model Press Cal button 3X to display “CAL” then ---- then the offset Use hidden up/down buttons to adjust offset UP Down CAL * Remove knob to access CAL Button

36. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor Electronic Holding Control TH-III Control Cook & Hold

37. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor Electronic Holding Components Circuit Breaker Switch Control Power Supply Electro-Mechanical Relay PT-100 RTD Temperature Sensor Door Switch

38. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor Displays Actual Cavity Temperature Press up/down button and release to display set temp Press and release up/down rapidly to change set point in increments of 1° Press and hold up/down for 8 seconds to change set temp rapidly

39. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor Unit Operation Switch on = 120V or 208V to Power supply 12 VDC from power supply to control Control sends 12 VDC to relay coil on call for heat Relay closes Elements Energized Set temperature reached Relay coil voltage interrupted at control

40. Last updated: 6/6/2016www.alto-shaam.com

41. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor Holding Calibration Set temp to 140°F Let temperature stabilize (minimum 30-45 minutes) Press/Hold up/down arrows for 25 seconds to display offset Adjust offset up/down using arrows as needed

42. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III Components Circuit Breaker Switch Power Supply Voltage Monitor Board Control Solid State Relay PT-100 RTD Temperature Sensor Heat Cable Door Switch Product Probe

43. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III Operation - Hold Mode Switch on power to power supply and voltage monitor 12VDC out of power supply to control Power on control Displays last set HOLD Temp, press hold then up/down arrows to change On a call for heat (halo-heat light)12 VDC sent from control to solid state relay coil Relay closes and sends voltage through high limit to the elements Cavity Air sensor reaches temp and voltage to relay coil interrupted

44. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III Operation - Hold Mode Power Up Hold Mode Displays Last Set Hold temp Displays any available presets Halo-Heat light indicates call for heat

45. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III Operation - Cook Mode Press Cook and set cook temp Time and Probe will flash, select method of cooking Set Cook Time or Probe Temp Pre-Heat Light will illuminate and Pre- Heat Time will count down ( 45 minutes)  Display will alternate between Timer counting down and set Cook Temp Unit will beep and display READY when Pre-Heat time has elapsed

46. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III Operation - Cook Mode Load Product, Probe Product if applicable, and Press START – COOK light will illuminate  Display will alternate between set cook temp and time counting down Or  Display will alternate between set cook temp, current probe temp, and cook time counting up Unit will cycle at set cook temp until time elapses or probe temp is met Hold Light will illuminate, control will display hold temp and count up to indicate time in hold READY light will illuminate 2 hours into hold cycle

47. Last updated: 6/6/2016www.alto-shaam.com

48. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III - Service Calibration - Hold Unit into HOLD mode set at 140°F Let temperature stabilize (minimum 30-45 minutes) Press and hold up/down arrows to display the offset Use up/down arrows to adjust offset Example: Set at 140°F, actual = 155°F, Offset = +15

49. Last updated: 6/6/2016www.alto-shaam.com Electronic Controls Microprocessor TH-III - Service Calibration - Cook Press Cook and set to 250°F Allow temperature to stabilize (Minimum 30-45 minutes) Press and hold up/down arrows for 25 seconds to access the offset Adjust offset using up/down arrows Example: Set at 250°F, Actual = 230°F, Offset = -20

50. Last updated: 6/6/2016www.alto-shaam.com TH-III - Error Codes E-10Air Sensor Shorted - Control reading a temp below 7 degrees for 20 seconds E-30Under Temperature - Set temp has not been reached in 90 minutes E-11Air Sensor Open - Control reading a temp above 515 degrees for 20 seconds E-31Over Temperature - Control is reading a temp more then 25 degrees above set point for more then two minutes E-20Product Probe Shorted - Control reading a temp below 7 degrees for 20 seconds E-60Real Time Clock Error - Clock Chip Error – Turn unit on displaying E-60 for 30 minutes – Turn breaker switch off for 10 seconds – Error should not be present E-21Product Probe Open - Control reading a temp above 515 degrees for 20 seconds E-80EPROM Error - Unplug unit if error displays when power is restored replace control